replace Screen.width/Screen.height with accessor methods

Screen.width and Screen.height are now gone, use the methods
getWidth() and getHeight() to get the relevant data. They will
take blitbuffer/framebuffer rotation into account.

frontend/ui/gesturedetector.lua

@@ -575,7 +575,7 @@ function GestureDetector:adjustGesCoordinate(ges)
 	if Screen.cur_rotation_mode == 1 then
 		-- in landscape mode rotated 270
 		if ges.pos then
-			ges.pos.x, ges.pos.y = (Screen.width - ges.pos.y), (ges.pos.x)
+			ges.pos.x, ges.pos.y = (Screen:getWidth() - ges.pos.y), (ges.pos.x)
 		end
 		if ges.ges == "swipe" or ges.ges == "pan"
 			or ges.ges == "two_finger_swipe"
@@ -612,7 +612,7 @@ function GestureDetector:adjustGesCoordinate(ges)
 	elseif Screen.cur_rotation_mode == 3 then
 		-- in landscape mode rotated 90
 		if ges.pos then
-			ges.pos.x, ges.pos.y = (ges.pos.y), (Screen.height - ges.pos.x)
+			ges.pos.x, ges.pos.y = (ges.pos.y), (Screen:getHeight() - ges.pos.x)
 		end
 		if ges.ges == "swipe" or ges.ges == "pan"
 			or ges.ges == "two_finger_swipe"

frontend/ui/input.lua

@@ -330,10 +330,10 @@ function Input:init()
 							ev.code = ABS_X
 							-- We always have to substract from the physical x,
 							-- regardless of the orientation
-							if (Screen.width<Screen.height) then
-								ev.value = Screen.width - ev.value
+							if (Screen:getWidth()<Screen:getHeight()) then
+								ev.value = Screen:getWidth() - ev.value
 							else
-								ev.value = Screen.height - ev.value
+								ev.value = Screen:getHeight() - ev.value
 							end
 						end
 						-- same thing for multitouch events (phoenix)
@@ -343,10 +343,10 @@ function Input:init()
 							ev.code = ABS_MT_POSITION_X
 							-- We always have to substract from the physical x,
 							-- regardless of the orientation
-							if (Screen.width<Screen.height) then
-								ev.value = Screen.width - ev.value
+							if (Screen:getWidth()<Screen:getHeight()) then
+								ev.value = Screen:getWidth() - ev.value
 							else
-								ev.value = Screen.height - ev.value
+								ev.value = Screen:getHeight() - ev.value
 							end
 						end
 					end
@@ -359,10 +359,10 @@ function Input:init()
 					if ev.code == ABS_X then
 						-- We always have to substract from the physical x,
 						-- regardless of the orientation
-						if (Screen.width<Screen.height) then
-							ev.value = Screen.width - ev.value
+						if (Screen:getWidth()<Screen:getHeight()) then
+							ev.value = Screen:getWidth() - ev.value
 						else
-							ev.value = Screen.height - ev.value
+							ev.value = Screen:getHeight() - ev.value
 						end
 					end
 					return ev